Smash

The star of NBC's upcoming musical series (premiering Feb. 6, 10 p.m. ET) and her on-and-offscreen love interest, Will Chase, attended the N.Y.C. premiere for the show Thursday night, and hit a major relationship milestone in the process.

At an opulent dinner after the premiere, Chase, 41, met Messing's parents, sidling up to her father in a booth while the actress's mother sat on his other side.

A show insider confirmed to PEOPLE last month that the costars were dating – shortly after Messing, 43, confirmed that she and her husband of 10 years, Daniel Zelman, separated in 2011. (Chase also recently split from his wife.)